Hera is the goddess of marriage in Greek mythology. She is the sister and wife of Zeus. She was born to Cronus and Rhea but then she was swallowed by Cronus because he believed that one of his children would over throw him just as he over threw his father. When Cronus gave birth to a son called Zeus, he was not informed of his birth so he did not swallow Zeus. When Zeus grew up, he poisoned Cronus's food, forcing him to vomit out all of his children including Hera. Hera's other siblings are Poseidon, Hades, Demeter, and Hestia.